December weather forecastCassville, WI
December
Weather in December
December, the first month of the winter in Cassville, is still a freezing cold month, with an average temperature varying between 20.3°F (-6.5°C) and 30.4°F (-0.9°C).Temperature
The commencement of December involves a temperature shift, with the average high-temperature dropping from a frosty 43.5°F (6.4°C) in November to a subzero cold 30.4°F (-0.9°C). December brings an average low-temperature of 20.3°F (-6.5°C) to Cassville.Humidity
In December, the average relative humidity is 83%.Rainfall
In Cassville, during December, the rain falls for 6 days and regularly aggregates up to 1.42" (36mm) of precipitation. Throughout the year, in Cassville, Wisconsin, there are 138.5 rainfall days, and 28.46" (723mm) of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 10.6 days. Throughout December, 3.94" (100mm) of snow is accumulated. Throughout the year, there are 48.6 snowfall days, and 19.57" (497mm) of snow is accumulated.Daylight
The month with the shortest days is December, with an average of 9h and 6min of daylight.On the first day of the month, sunrise is at 7:15 am and sunset at 4:31 pm. On the last day of December, in Cassville, sunrise is at 7:34 am and sunset at 4:40 pm CST.
Sunshine
In Cassville, the average sunshine in December is 4h.UV index
January, November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index estimate of 2, and below, represents a low health risk from unprotected exposure to Sun's UV rays for the ordinary person.Note: During December, 1 as the daily maximum UV index converts into the following advice:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. The solar radiation around mid-day is intense; avoid the Sun and stay safe. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Be informed! The Sun's UV radiation can be nearly doubled due to the reflection from snow.
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in December
Cassville, WI
- Average high temperature in December: 30.4°F
The warmest month (with the highest average high temperature) is July (79.9°F).
The month with the lowest average high temperature is January (23.7°F).
- Average low temperature in December: 20.3°F
The month with the highest average low temperature is July (62.4°F).
The coldest month (with the lowest average low temperature) is January (11.3°F).
Average pressure in December
Cassville, WI
- Average pressure in December: 30.1"Hg
The month with the highest atmospheric pressure is January (30.13"Hg).
The month with the lowest atmospheric pressure is June (29.9"Hg).
Average wind speed in December
Cassville, WI
- Average wind speed in December: 9.5mph
The windiest month (with the highest average wind speed) is April (10.1mph).
The calmest month (with the lowest average wind speed) is August (6.6mph).
Average humidity in December
Cassville, WI
- Average humidity in December: 83%
The months with the highest relative humidity are January and February (88%).
The month with the lowest relative humidity is October (75%).
Average rainfall in December
Cassville, WI
- Average rainfall in December: 1.42"
The wettest month (with the highest rainfall) is May (3.94").
The driest month (with the least rainfall) is January (1.18").
Average rainfall days in December
Cassville, WI
- Average rainfall days in December: 6 days
The month with the highest number of rainy days is May (18 days).
The month with the least rainy days is January (4.4 days).
Average snowfall in December
Cassville, WI
- Average snowfall in December: 3.94"
The month with the highest snowfall is January (5.2").
The months with the least snowfall are June, July, August and September (0").
Average snowfall days in December
Cassville, WI
- Average snowfall days in December: 10.6 days
The month with the highest number of snowfall days is January (12.5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Cassville, WI
- Average daylight in December: 9h and 6min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in December: 4h and 0min
The months with the most sunshine are July and August (Average sunshine: 9h and 54min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Cassville, WI
- Average sunshine days in December: 16.7 days
The month with the most sunshine days is November (17.2 days).
The month with the least sunshine days is June (10.3 days).
Average UV index in December
Cassville, WI
- Average UV index in December: 1
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January, November and December (UV index 1).
Average cloud cover in December
Cassville, WI
- Average cloud cover in December: 59
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 31).
Average visibility in December
Cassville, WI
- Average visibility in December: 6mi
The months with the highest visibility are March, April, May, June, September, October, November and December (6mi).
The months with the lowest visibility are January, February, July and August (5mi).
